Base Coat

The base coat or colour coat is the second layer in a clear-over-base system. This is a very opaque and matte layer of paint which provides the colour of your car. It is applied to be thick enough to cover the primer and no more. The thickness of the paint system in clear-over-base system comes from the clear coat.

If you have a scratch on your car, and it's deep enough to penetrate the base coat, it won't be possible to polish it out, and it will need either repair-and-repaint or a cosmetic repair.